| abstract |
Disclosed is a phosphor characterized by containing a fluorescent material having a composition represented by the following general formula: M(0)aM(1)bM(2)x-(vm+n)M(3)(vm+n)-yOnNz-n. In the general formula, M(0) is selected from Li, Na, Be, Mg, Ca, Sr, Ba, Sc, Y, La, Gd and Lu; M(1) is selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb; M(2) is selected from Si, Ge, Sn, Ti, Hf and Zr; M(3) is selected from Be, B, Al, Ga, In, Tl and Zn; O represents oxygen; N represents nitrogen; and all of the following relations are satisfied: 33 ≤ x ≤ 51, 8 ≤ y ≤ 12, 36 ≤ z ≤ 56, 3 ≤ a + b ≤ 7, 0.001 ≤ b ≤ 1.2, me = a + b, 0.8•me ≤ m ≤ 1.2•me, 0 ≤ n ≤ 7, v = {a•v(0) + b•v(1)}/(a + b). Also disclosed are a method for producing such a phosphor, and a light-emitting device using such a phosphor. |